Lovely. They are also devoid of vision and ethics about the likely results of their actions. In short, they fail to consider the saying:
"The road to hell is paved with good intentions".
Have they even considered the question: Which of their targets would EVER sign-up for their service?
Who are their customers, and why would they pay for the service? The only plausible reason to pay Sentiance is to understand a target's behavior at a fine-grained level in order to insert a stimulus to get them to do something they would otherwise not do willingly. (or a stalker, to assault them).
So, they are making a wonderfully powerful tool to enable strangers to change a target's behavior without permission. Yet they are not bright enough to avoid putting a "sign up" popup on their website in a way that interrupts their own video.
They will enable someone to cause serious damage to our world. Please get a message to them that they need to stop and shut down.
If they want to build something REALLY powerful, they should pivot to building something to allow us to DETECT & PREVENT other software on our phones/computers from doing what they are now trying to do.
I'd pay for that, and I'm not the only one.
It doesn't really matter how nice, smart, talented, excited, curious, or well-meaning a person is. Judge them by their actions. What they build and what it is used for.
If you could pass a message them, please tell them to get a grip and realize how insanely creepy what they are doing is, and they should probably not do it, even if it makes them a bunch of money.
I suspect the idea that these two categories are mutually exclusive is at the root of most of the questionable applications of technology today.